Parameters To Be Set - ABB RELION REB500 Technical Manual

Section 5
Bay protection functions
IEC19000450 V1 EN-US
Figure 46: Principle of synchrocheck scheme
Figure 5.7.6.1
when it is permissible to connect a feeder to the power system. The voltages of busbar SS2
and the line are monitored.
Where:
SS1, SS2:
VT SS1, VT SS2, VT Line:
T1, T2:
CB:
uBusInput1, uBusInput2:
uLineInput:
BlckTrigBus1, BlckTrigBus2:
uBus1Activ, uBus2Activ:
5.7.6.2

Parameters to be set

Max. voltage difference |dU|
Max. phase-shift |dPh|
Max. frequency difference |df|
Minimum voltage level for monitoring(determination of whether plant is
energized)
Table continues on next page
122
shows the principle of the synchrocheck scheme for determining the instant
busbar 1, busbar 2
VTs on busbar 1, busbar 2 and line
Isolators on busbars 1 and 2
Circuit-breaker
Voltage input channels on the busbar side
Voltage input channel on the line side
Inputs for blocking the synchro-BlSyncLine check function by the VT fuse
failure equipment
Binary inputs for switching between the analogue busbar voltage inputs in
accordance with the configuration of the isolators (mimic busbar)
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18000045-IEC19000450-1-en.vsdx
GUID-658DA938-FF60-44EA-BB99-96C62BC6136C v1
maxVoltDif
maxPhaseDif
maxFreqDif
minVoltage
Bay protection functions REB500
1MRK 505 406-UEN B
Technical manual